When comparing Curse Voice vs C3, the Slant community recommends Curse Voice for most people. In the question“What is the best voice chat for gaming?”Curse Voice is ranked 6th while C3 is ranked 10th. The most important reason people chose Curse Voice is:

Unlike other popular VOIP gaming services there is no need for a server to use this app nor is there a cost to use it. It is completely free for anyone to use at all times.

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Pros

Pro

Completely free - not even a server is required

Unlike other popular VOIP gaming services there is no need for a server to use this app nor is there a cost to use it. It is completely free for anyone to use at all times.

Pro

Supports both voice and text communication

Curse Voice allows you to create a voice call, or text chat with your friends. This allows for flexibility - if you can't understand someone because of their accent, or if someone doesn't have a mic, or any other reason, you can still use the chatroom for typed messages instead of verbal ones.

Pro

Game Integration and overlays

Curse Voice will display which game you and your friends are playing. In game overlays supported for 10 games as well, which you can find listed here.

Pro

Supports many languages

Pro

Easy to use

Pro

It doesn't consume computer resources

Pro

No need to host a server

The servers are provided by C3, so there is no need to host a server yourself.

Pro

Chatroom organization options

You can create channels as well as sub-channels. In addition, you can set up moderators for these chat rooms as well.

Pro

Completely free to use

No gimmicks or micro-transactions. C3 is completely free to download and use.

Cons

Con

Changes could be coming soon

Twitch (which is itself owned by Amazon) has recently bought Curse. Down the road, it's likely we'll see changes to Curse that are imposed by Twitch (and Amazon).

Con

No linux support

Con

Distasteful UI

Curse tends to clutter their app with many useless stuff, they do try to fit a great many things onto one tiny box. If the UI is something that you look in a program, this isn't for you.

Con

Busy UI

The C3 UI is busy with lots going on. There are multiple tab arrays, channel dropdowns, and many buttons. This all leaves the chat section a very small portion while it is actually the more important function.

Con

Little dev support

The last time the website was updated was 2014, and there doesn't seem to be any activity by the devs lately.